Geqege a



(No Model.)

G. 'A. BELL 8v W. W.NORMAN.

EXTENSION STEP LADDER. N0. 287,793. Patented Nov. 6, 1883.

' Fly. 1

, Wine $565- UNITED STATES PATENT g OFFICE...

GEORGE A. BELL AND WILLIAM W. NORMAN, OF MORLEY, MISSOURL .EXTENSIONSTEP-LADDER.

SPECIFIGATIOH forming part of Letters Patent No. 287,793, dated November6, 1883.

I Application file d August 22, 1883. (No model.) 7

To a, whom it may concern/.-

Be it known that we, GEORGE A. BELL and WILLIAM W. ,NoRMAN, citizens ofthe United States, residing at 'Morley, in the county of Scott, State ofMissouri, have invented an EX- tension Step-Ladder, of whichthefollowing is a specification. .7

Our invention rela es to grooved extensibleladders having slotted stilesand supports or legs, the same being in sections, and held together bybolts. working in the slots of the stiles and supports, said ladderbeing provided with hinged brace-rods having pins in the outerends-working in the slots of the stiles and sup- I 5 ports, and thespring-catches, whereby to regulate the adjustment of the sections. Thisladder can'be raised or loweredto suit all elevations; can be takenapart and used single, can be drawn out either from the top or from theI bottom. We attain these objects bythe mechanism illustrated in theaccompanying drawings, in whichy Figure 1 represents the ladder with theeX- tension down, and shows the hinged brace-rods in position. Fig. 2shows the ladder folded,

- also the brace-rods. Fig. 3 shows the ladder extended to its fullheight.

Letter A represents the hinged brace-rods, fastened at the outer ends bythe bolts B B, working in the slots. r

O G are, the springcatches, which arein .serted near the top of thestiles and supports, and the points of said catches go through theoutside stiles and supports and enter thimbled holes D D, which are inthe inside stiles 5 Fig. 4 shows the hingedbrace-rods. Fig. 5 o

is the catch, with the spring F, which works the catch. Fig. 6 shows thehinging of the top of the ladder. Fig. 7 is as'ection online ad of Fig.2, showing the arrangement and operation of the catch in the stiles. Weare aware that prior to our invention there have been grooved extensiblestep-lad- V ders. We therefore do not wish to make our claims too broad;vbut What we doclaim, and desire to secure Let: o ters Patent for, isThe combination of the front and rear slotted portions, the hingedbrace-rods having pins in the outer ends working in the slots of thestiles and legs or supports, and the spring-catches, whereby toregulate'the adjustment of the sec-' tions, all substantially asspecified.

GEORGE ALBERT BELL. WILLIAM W. NORMAN. Witnesses: 7

JOHN L. GURD, W. S. BROWN.

